The eldest son of William Newton II of Whateley Hall near Castle Bromwich and Barrells Hall at Ullenhall near Henley-in-Arden in Warwickshire, Goodwin Newton was born in 1835 in Birmingham. Following this he was called to the Bar by the members of Middle Temple, but never practiced due to his father dying. Upon the death of his father William II in 1862, Goodwin Newton inherited Barrells Hall and became Lord of the Manor of Ullenhall.
He was educated at Saint John"s College part of Cambridge University along with his brother Canon Horace Newton, and graduated in 1858.
He used "Goodwin" as his main christian name, which became a family middle name for generations afterwards. Before William II purchased Barrells Hall in 1856 the family house had been (and continued to be in addition to Barrells Hall for 20 years after the Barrells Hall purchase) Whateley Hall, Castle Bromwich, which was destroyed for development in 1935
The family fortune came from Welsh Slate Quarries on the estate he owned by Llanberis, North Wales which including Bryn Bras Castle, as well as vast amounts of freehold land in Birmingham, including large portions of New Street in the centre, and many ground rents. In his obituary from 1907 The Times stated that he was one of the largest owners of freehold property in Birmingham
Both brothers then set about purchasing more neighbouring land and estates, including the Isle of Càrna and Rahoy and eventually building the whole land mass up to 41 square miles (110 km2), and 20 miles (30 km) of coastline along the southern shore of Loch Sunart.
He was Chairman of Imperial Continental Gas Association, now known as Calor Gas, for a long period during the late nineteenth century, at a time of much growth within the company.
He was a County Magistrate for Warwickshire
In 1887 he was the High Sheriff of Warwickshire, which was also the Jubilee year for Queen Victoria. The London Gazette records him as being invited to Windsor Castle for a celebration of Queen Victoria"s birthday with the other High Sheriffs from around the country.
He was a founder member of the Warwickshire County Council, such was his position and respect within the County During his lifetime he became famous for his philanthropy, giving away millions of pounds in today"s money, and building hospitals, schools, theatres, churches and donating to various charities with the support of his brother Canon Horace Newton.
Upon the death of his father he also gave up a career as a Barrister and potential Member of Parliament in the House of Commons to become a Country Gentleman and landowner at the family seat.
